Gravitino production in the warm inflationary scenario

Details Gravitino production in the warm inflationary scenario Gravitino production in the warm inflationary scenario

2000-11-20

arxiv.org/abs/astro-ph/0011365v1

Phys.Rev. D64 (2001) 023513

Astronomy and Astrophysics

Astrophysics

7 pages, 3 figures, submitted to Phys Rev D

Scientific paper

10.1103/PhysRevD.64.023513

We estimate the production of gravitinos during and after the end of a period of warm inflation, a model in which radiation is produced continuously as the field rolls down the potential producing dissipation. We find that gravitino production is efficient for models in the strong dissipation regime, with the result that standard nucleosynthesis is disrupted unless the magnitude of the inflaton potential is very small. Combining this with the constraint from the thermal production of adiabatic density perturbations we find the dissipation rate must be extraordinarily strong, or that the potential is very flat.

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